From b479742884c258a905432986e84d30fc6ffdee11 Mon Sep 17 00:00:00 2001
From: Emile Clark-Boman <eclarkboman@gmail.com>
Date: Sat, 27 Sep 2025 13:27:15 +1000
Subject: [PATCH] transfer RENA project deps+make to enby

---
 Makefile      | 51 +++++++++++++++++++++++++++++++++++
 config.mk     | 13 +++++++++
 deps/Makefile | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++
 mk            |  2 ++
 4 files changed, 141 insertions(+)
 create mode 100644 Makefile
 create mode 100644 config.mk
 create mode 100644 deps/Makefile
 create mode 100755 mk

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..6526605
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,51 @@
+.DEFAULT_GOAL := all
+
+include config.mk
+
+# === BUILD ENVIRONMENT ===
+BIN := bin
+BUILD := build
+
+LIB := lib
+
+# === MACRO DEFINITIONS ===
+define objpath
+$(addprefix $(BUILD)/,
+	$(addsuffix .o,
+		$(basename $(1))))
+endef
+define mkobj
+$(foreach DEP, $?,
+	mkdir -p $(dir $(call objpath, $(DEP)))
+	$(CC) $(CFLAGS) $1 -o $(call objpath, $(DEP)) -c $(DEP))
+
+$(LD) -r $(LDFLAGS) -o $@ $(call objpath, $?)
+endef
+
+# === BUILD TARGETS ===
+all:
+
+.PHONY: tests
+tests: $(BIN) $(BIN)/test-imgui-sdl3glfw3 $(BIN)/test-custom
+
+$(BIN)/test-imgui-sdl3glfw3: 
+	$(CXX) -o $@ sandbox/$(notdir $@).cpp -Ideps -Ideps/imgui -Ldeps -limgui -lSDL3 -lGL -lm
+$(BIN)/test-custom: 
+	$(CXX) -o $@ sandbox/$(notdir $@).cpp -Ideps -Ideps/imgui -Ldeps -limgui -lSDL3 -lGL -lm
+$(BUILD) $(BIN):
+	mkdir -p $@
+
+# === DEVELOPMENT TARGETS ===
+# .PHONY: debug run test
+# debug:
+# 	$(MAKE) all                          \
+# 		CFLAGS="$(CFLAGS) $(CFLAGS_DBG)"  \
+# 		CLDFLAGS="$(CLDFLAGS) $(CLDFLAGS_DBG)"
+# run: debug
+# 	- command $(BIN)/pw-test
+# test: clean run
+
+# === UTILITY TARGETS ===
+.PHONY: clean
+clean:
+	- rm -rf $(BUILD) $(BIN) vgcore.* &>/dev/null logs/
diff --git a/config.mk b/config.mk
new file mode 100644
index 0000000..86f4764
--- /dev/null
+++ b/config.mk
@@ -0,0 +1,13 @@
+# === C Compiler Configuration ===
+CC := gcc
+CFLAGS := -Wall -Wextra -std=gnu23 -O
+CDEBUG := -g
+
+# === C++ Compiler Configuration ===
+CXX := gcc -xc++ -lstdc++ -shared-libgcc
+CXXFLAGS := -Wall -Wextra -O
+CXXDEBUG := -g
+
+# === Linker Configuration ===
+LD := ld
+LDFLAGS :=
diff --git a/deps/Makefile b/deps/Makefile
new file mode 100644
index 0000000..691105c
--- /dev/null
+++ b/deps/Makefile
@@ -0,0 +1,75 @@
+.DEFAULT_GOAL := all
+
+CXX := gcc -xc++ -lstdc++ -shared-libgcc
+
+BUILD := build
+DEPS := imgui
+SYNC := $(addsuffix -sync, $(DEPS))
+
+# imgui_impl_allegro5.o imgui_impl_android.o      imgui_impl_dx9.o         
+# imgui_impl_dx10.o     imgui_impl_dx11.o         imgui_impl_dx12.o        
+# imgui_impl_glfw.o     imgui_impl_glut.o         imgui_impl_opengl2.o     
+# imgui_impl_opengl3.o  imgui_impl_sdl2.o         imgui_impl_sdl3.o        
+# imgui_impl_sdlgpu3.o  imgui_impl_sdlrenderer2.o imgui_impl_sdlrenderer3.o
+# imgui_impl_vulkan.o   imgui_impl_wgpu.o         imgui_impl_win32.o 
+
+# === DEAR IMGUI = VALID BACKENDS ===
+# allegro5 glfw    sdlgpu3
+# android  glut    sdlrenderer2
+# dx9      opengl2 sdlrenderer3
+# dx10     opengl3 vulkan
+# dx11     sdl2    wgpu
+# dx12     sdl3    win32
+IMGUI_ENABLE_BACKENDS := sdl3 opengl3
+
+# Dear ImGui
+IMGUI_UPSTREAM := https://github.com/ocornut/imgui.git
+IMGUI_BRANCH := docking
+IMGUI_TAG := v1.92.3-docking
+
+IMGUI_BACKENDS := $(foreach backend, $(IMGUI_ENABLE_BACKENDS), imgui_impl_$(backend).o)
+
+IMGUI_OBJS := imgui.o imgui_demo.o                        \
+			  imgui_draw.o imgui_tables.o imgui_widgets.o \
+			  imgui_freetype.o imgui_stdlib.o \
+			  $(addprefix backends/, $(IMGUI_BACKENDS))
+
+STATICLIBS := $(foreach dep, $(DEPS), lib$(dep).a)
+
+# === BUILD TARGETS === 
+all: $(BUILD) $(STATICLIBS)
+$(BUILD):
+	mkdir -p $(addprefix $(BUILD)/, $(DEPS))
+
+libimgui.a: imgui $(addprefix $(BUILD)/imgui/, $(IMGUI_OBJS))
+	ar rcs $@ $(filter %.o, $^)
+
+$(BUILD)/imgui/imgui_stdlib.o: imgui/misc/cpp/imgui_stdlib.cpp
+	$(CXX) -c $^ -o $@ -Iimgui
+$(BUILD)/imgui/imgui_freetype.o: imgui/misc/freetype/imgui_freetype.cpp
+	$(CXX) -c $^ -o $@ -Iimgui
+$(BUILD)/imgui/backends/%.o: imgui/backends/%.cpp
+	mkdir -p $(dir $@)
+	$(CXX) -c $^ -o $@ -Iimgui
+$(BUILD)/imgui/%.o: imgui/%.cpp
+	$(CXX) -c $^ -o $@
+
+# === SYNC TARGETS ===
+.PHONY: sync $(SYNC)
+sync: $(SYNC)
+
+imgui:
+	mkdir -p $@
+	- git -C $@ init
+	- git -C $@ remote add upstream $(IMGUI_UPSTREAM)
+	$(MAKE) $@-sync
+imgui-sync: imgui
+	git -C $< fetch upstream --tags
+	git -C $< -c advice.detachedHead=false checkout $(IMGUI_TAG)
+
+# === UTILITY TARGETS === 
+.PHONY: clean purge
+clean:
+	rm -rf $(BUILD) $(STATICLIBS)
+purge: clean
+	rm -rf $(DEPS)
diff --git a/mk b/mk
new file mode 100755
index 0000000..8b114a6
--- /dev/null
+++ b/mk
@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+$([ -x "$(command -v bear)" ] && echo 'bear -- ') make $@